%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : ALG203+1 : TPTP v9.3.1. Released v2.7.0.
% Transfm : none
% Format : tptp:raw
% Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% Computer : n003.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8046.5625MB
% OS : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Fri Sep 25 12:53:46 PM UTC 2026
% Result : Theorem 2.67s 1.22s
% Output : CNFRefutation 2.67s
% Verified :
% SZS Type : Refutation
% Derivation depth : 16
% Number of leaves : 4
% Syntax : Number of formulae : 54 ( 18 unt; 0 def)
% Number of atoms : 173 ( 58 equ)
% Maximal formula atoms : 14 ( 3 avg)
% Number of connectives : 197 ( 78 ~; 67 |; 32 &)
% ( 0 <=>; 20 =>; 0 <=; 0 <~>)
% Maximal formula depth : 10 ( 4 avg)
% Maximal term depth : 4 ( 2 avg)
% Number of types : 1 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of predicates : 6 ( 4 usr; 3 prp; 0-2 aty)
% Number of functors : 6 ( 6 usr; 2 con; 0-2 aty)
% Number of variables : 78 ( 0 sgn 74 !; 4 ?; 20 :)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X0] :
( sorti1(X0)
=> ! [X1] :
( sorti1(X1)
=> sorti1(op1(X0,X1)) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',ax1) ).
fof(f3,axiom,
( ? [X1] :
( op1(X1,X1) != X1
& sorti1(X1) )
& ? [X0] :
( op1(X0,X0) = X0
& sorti1(X0) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',ax3) ).
fof(f4,axiom,
~ ( ? [X1] :
( op2(X1,X1) != X1
& sorti2(X1) )
& ? [X0] :
( op2(X0,X0) = X0
& sorti2(X0) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',ax4) ).
fof(f5,conjecture,
( ( ! [X1] :
( sorti2(X1)
=> sorti1(j(X1)) )
& ! [X0] :
( sorti1(X0)
=> sorti2(h(X0)) ) )
=> ~ ( ! [X7] :
( sorti1(X7)
=> j(h(X7)) = X7 )
& ! [X6] :
( sorti2(X6)
=> h(j(X6)) = X6 )
& ! [X4] :
( sorti2(X4)
=> ! [X5] :
( sorti2(X5)
=> j(op2(X4,X5)) = op1(j(X4),j(X5)) ) )
& ! [X2] :
( sorti1(X2)
=> ! [X3] :
( sorti1(X3)
=> h(op1(X2,X3)) = op2(h(X2),h(X3)) ) ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1) ).
fof(f6,negated_conjecture,
~ ( ( ! [X1] :
( sorti2(X1)
=> sorti1(j(X1)) )
& ! [X0] :
( sorti1(X0)
=> sorti2(h(X0)) ) )
=> ~ ( ! [X7] :
( sorti1(X7)
=> j(h(X7)) = X7 )
& ! [X6] :
( sorti2(X6)
=> h(j(X6)) = X6 )
& ! [X4] :
( sorti2(X4)
=> ! [X5] :
( sorti2(X5)
=> j(op2(X4,X5)) = op1(j(X4),j(X5)) ) )
& ! [X2] :
( sorti1(X2)
=> ! [X3] :
( sorti1(X3)
=> h(op1(X2,X3)) = op2(h(X2),h(X3)) ) ) ) ),
inference(negated_conjecture,[status(cth)],[f5]) ).
fof(f7,plain,
! [X0] :
( ~ sorti1(X0)
| ! [X1] :
( ~ sorti1(X1)
| sorti1(op1(X0,X1)) ) ),
inference(ennf_transformation,[],[f1]) ).
fof(f9,plain,
( ! [X1] :
( op2(X1,X1) = X1
| ~ sorti2(X1) )
| ! [X0] :
( op2(X0,X0) != X0
| ~ sorti2(X0) ) ),
inference(ennf_transformation,[],[f4]) ).
fof(f10,plain,
( ! [X1] :
( ~ sorti2(X1)
| sorti1(j(X1)) )
& ! [X0] :
( ~ sorti1(X0)
| sorti2(h(X0)) )
& ! [X7] :
( ~ sorti1(X7)
| j(h(X7)) = X7 )
& ! [X6] :
( ~ sorti2(X6)
| h(j(X6)) = X6 )
& ! [X4] :
( ~ sorti2(X4)
| ! [X5] :
( ~ sorti2(X5)
| j(op2(X4,X5)) = op1(j(X4),j(X5)) ) )
& ! [X2] :
( ~ sorti1(X2)
| ! [X3] :
( ~ sorti1(X3)
| h(op1(X2,X3)) = op2(h(X2),h(X3)) ) ) ),
inference(ennf_transformation,[],[f6]) ).
fof(f11,plain,
( ! [X1] :
( ~ sorti2(X1)
| sorti1(j(X1)) )
& ! [X0] :
( ~ sorti1(X0)
| sorti2(h(X0)) )
& ! [X7] :
( ~ sorti1(X7)
| j(h(X7)) = X7 )
& ! [X6] :
( ~ sorti2(X6)
| h(j(X6)) = X6 )
& ! [X4] :
( ~ sorti2(X4)
| ! [X5] :
( ~ sorti2(X5)
| j(op2(X4,X5)) = op1(j(X4),j(X5)) ) )
& ! [X2] :
( ~ sorti1(X2)
| ! [X3] :
( ~ sorti1(X3)
| h(op1(X2,X3)) = op2(h(X2),h(X3)) ) ) ),
inference(flattening,[],[f10]) ).
fof(f12,plain,
( sK1 != op1(sK1,sK1)
& sorti1(sK1)
& sK0 = op1(sK0,sK0)
& sorti1(sK0) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK0,sK1]),skolemize(X0,sK0),skolemize(X1,sK1)],[f3]) ).
fof(f13,plain,
( ! [X7] :
( ~ sorti2(X7)
| sorti1(j(X7)) )
& ! [X6] :
( ~ sorti1(X6)
| sorti2(h(X6)) )
& ! [X5] :
( ~ sorti1(X5)
| j(h(X5)) = X5 )
& ! [X4] :
( ~ sorti2(X4)
| h(j(X4)) = X4 )
& ! [X2] :
( ~ sorti2(X2)
| ! [X3] :
( ~ sorti2(X3)
| j(op2(X2,X3)) = op1(j(X2),j(X3)) ) )
& ! [X0] :
( ~ sorti1(X0)
| ! [X1] :
( ~ sorti1(X1)
| h(op1(X0,X1)) = op2(h(X0),h(X1)) ) ) ),
inference(rectify,[],[f11]) ).
fof(f14,plain,
! [X0,X1] :
( ~ sorti1(X0)
| ~ sorti1(X1)
| sorti1(op1(X0,X1)) ),
inference(cnf_transformation,[],[f7]) ).
fof(f16,plain,
sK1 != op1(sK1,sK1),
inference(cnf_transformation,[],[f12]) ).
fof(f17,plain,
sorti1(sK1),
inference(cnf_transformation,[],[f12]) ).
fof(f18,plain,
sK0 = op1(sK0,sK0),
inference(cnf_transformation,[],[f12]) ).
fof(f19,plain,
sorti1(sK0),
inference(cnf_transformation,[],[f12]) ).
fof(f20,plain,
! [X0,X1] :
( op2(X1,X1) = X1
| ~ sorti2(X1)
| op2(X0,X0) != X0
| ~ sorti2(X0) ),
inference(cnf_transformation,[],[f9]) ).
fof(f22,plain,
! [X6] :
( ~ sorti1(X6)
| sorti2(h(X6)) ),
inference(cnf_transformation,[],[f13]) ).
fof(f23,plain,
! [X5] :
( ~ sorti1(X5)
| j(h(X5)) = X5 ),
inference(cnf_transformation,[],[f13]) ).
fof(f26,plain,
! [X0,X1] :
( ~ sorti1(X0)
| ~ sorti1(X1)
| h(op1(X0,X1)) = op2(h(X0),h(X1)) ),
inference(cnf_transformation,[],[f13]) ).
tcf(c_49,plain,
! [X0: $i,X1: $i] :
( sorti1(op1(X0,X1))
| ~ sorti1(X1)
| ~ sorti1(X0) ),
inference(cnf_transformation,[],[f14]) ).
tcf(c_51,plain,
sorti1(sK0),
inference(cnf_transformation,[],[f19]) ).
tcf(c_52,plain,
op1(sK0,sK0) = sK0,
inference(cnf_transformation,[],[f18]) ).
tcf(c_53,plain,
sorti1(sK1),
inference(cnf_transformation,[],[f17]) ).
tcf(c_54,plain,
op1(sK1,sK1) != sK1,
inference(cnf_transformation,[],[f16]) ).
tcf(c_55,plain,
! [X0: $i,X1: $i] :
( ( op2(X1,X1) = X1 )
| ~ sorti2(X1)
| ~ sorti2(X0)
| ( op2(X0,X0) != X0 ) ),
inference(cnf_transformation,[],[f20]) ).
tcf(c_56,negated_conjecture,
! [X0: $i,X1: $i] :
( ( op2(h(X0),h(X1)) = h(op1(X0,X1)) )
| ~ sorti1(X1)
| ~ sorti1(X0) ),
inference(cnf_transformation,[],[f26]) ).
tcf(c_59,negated_conjecture,
! [X0: $i] :
( ( j(h(X0)) = X0 )
| ~ sorti1(X0) ),
inference(cnf_transformation,[],[f23]) ).
tcf(c_60,negated_conjecture,
! [X0: $i] :
( sorti2(h(X0))
| ~ sorti1(X0) ),
inference(cnf_transformation,[],[f22]) ).
tcf(c_63,plain,
( sorti2(h(sK0))
| ~ sorti1(sK0) ),
inference(instantiation,[status(thm)],[c_60]) ).
tcf(c_181,plain,
! [X0: $i] :
( ~ iPr_def_10
| ( op2(X0,X0) = X0 )
| ~ sorti2(X0) ),
inference(splitting,[splitting(split),new_symbols(definition,[iPr_def_10])],[c_55]) ).
tcf(c_182,plain,
! [X0: $i] :
( ~ iPr_def_11
| ( op2(X0,X0) != X0 )
| ~ sorti2(X0) ),
inference(splitting,[splitting(split),new_symbols(definition,[iPr_def_11])],[c_55]) ).
tcf(c_183,plain,
( iPr_def_11
| iPr_def_10 ),
inference(splitting,[splitting(split),new_symbols(definition,[])],[c_55]) ).
tcf(c_185,negated_conjecture,
! [X0: $i] :
( sorti2(h(X0))
| ~ sorti1(X0) ),
inference(demodulation,[status(thm)],[c_60]) ).
tcf(c_186,negated_conjecture,
! [X0: $i] :
( ( j(h(X0)) = X0 )
| ~ sorti1(X0) ),
inference(demodulation,[status(thm)],[c_59]) ).
tcf(c_189,negated_conjecture,
! [X0: $i,X1: $i] :
( ( op2(h(X0),h(X1)) = h(op1(X0,X1)) )
| ~ sorti1(X1)
| ~ sorti1(X0) ),
inference(demodulation,[status(thm)],[c_56]) ).
tcf(c_488,plain,
! [X0: $i] :
( ( op2(h(X0),h(sK0)) = h(op1(X0,sK0)) )
| ~ sorti1(X0) ),
inference(superposition,[status(thm)],[c_51,c_189]) ).
tcf(c_497,plain,
! [X0: $i] :
( ( op2(h(X0),h(sK1)) = h(op1(X0,sK1)) )
| ~ sorti1(X0) ),
inference(superposition,[status(thm)],[c_53,c_189]) ).
tcf(c_500,plain,
j(h(sK1)) = sK1,
inference(superposition,[status(thm)],[c_53,c_186]) ).
tcf(c_538,plain,
op2(h(sK0),h(sK0)) = h(op1(sK0,sK0)),
inference(superposition,[status(thm)],[c_51,c_488]) ).
tcf(c_541,plain,
op2(h(sK0),h(sK0)) = h(sK0),
inference(light_normalisation,[status(thm)],[c_538,c_52]) ).
tcf(c_550,plain,
op2(h(sK1),h(sK1)) = h(op1(sK1,sK1)),
inference(superposition,[status(thm)],[c_53,c_497]) ).
tcf(c_609,plain,
! [X0: $i,X1: $i] :
( ( j(h(op1(X0,X1))) = op1(X0,X1) )
| ~ sorti1(X1)
| ~ sorti1(X0) ),
inference(superposition,[status(thm)],[c_49,c_186]) ).
tcf(c_715,plain,
! [X0: $i] :
( ( op2(h(X0),h(X0)) = h(X0) )
| ~ iPr_def_10
| ~ sorti1(X0) ),
inference(superposition,[status(thm)],[c_185,c_181]) ).
tcf(c_819,plain,
( ( op2(h(sK1),h(sK1)) = h(sK1) )
| ~ iPr_def_10 ),
inference(superposition,[status(thm)],[c_53,c_715]) ).
tcf(c_821,plain,
( ( h(op1(sK1,sK1)) = h(sK1) )
| ~ iPr_def_10 ),
inference(light_normalisation,[status(thm)],[c_819,c_550]) ).
tcf(c_845,plain,
! [X0: $i] :
( ( j(h(op1(X0,sK1))) = op1(X0,sK1) )
| ~ sorti1(X0) ),
inference(superposition,[status(thm)],[c_53,c_609]) ).
tcf(c_1033,plain,
( ~ iPr_def_11
| ~ sorti2(h(sK0)) ),
inference(superposition,[status(thm)],[c_541,c_182]) ).
tcf(c_1133,plain,
~ iPr_def_11,
inference(global_subsumption_just,[status(thm)],[c_1033,c_51,c_63,c_1033]) ).
tcf(c_1135,plain,
iPr_def_10,
inference(backward_subsumption_resolution,[status(thm)],[c_183,c_1133]) ).
tcf(c_1136,plain,
h(op1(sK1,sK1)) = h(sK1),
inference(backward_subsumption_resolution,[status(thm)],[c_821,c_1135]) ).
tcf(c_1817,plain,
j(h(op1(sK1,sK1))) = op1(sK1,sK1),
inference(superposition,[status(thm)],[c_53,c_845]) ).
tcf(c_1820,plain,
op1(sK1,sK1) = sK1,
inference(light_normalisation,[status(thm)],[c_1817,c_500,c_1136]) ).
tcf(c_1821,plain,
$false,
inference(forward_subsumption_resolution,[status(thm)],[c_1820,c_54]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : ALG203+1 : TPTP v9.3.1. Released v2.7.0.
% 0.00/0.04 % Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.10/0.38 % Computer : n003.cluster.edu
% 0.10/0.38 % Model : x86_64 x86_64
% 0.10/0.38 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.38 % Memory : 8046.5625MB
% 0.10/0.38 % OS : Linux 6.8.0-71-generic
% 0.10/0.38 % CPULimit : 300
% 0.10/0.38 % WCLimit : 300
% 0.10/0.38 % DateTime : Fri Sep 25 05:04:37 UTC 2026
% 0.10/0.38 % CPUTime :
% 0.10/0.38 Running run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.10/0.42 Running first-order theorem proving
% 0.10/0.42 Running: /export/starexec/sandbox/solver/bin/iproveropt-multi-core.sh -d -n -l tptp -s fof_schedule -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.10/0.44
% 0.10/0.44 % ======== iProver multi-core TPTP/SMT =========
% 0.10/0.44
% 0.10/0.44 % Detected problem language: tptp
% 0.10/0.45 % Proving...
% 2.67/1.22 % SZS status Started for theBenchmark.p
% 2.67/1.22 % SZS status Theorem for theBenchmark.p
% 2.67/1.22
% 2.67/1.22 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 2.67/1.22
% 2.67/1.22 % ------ iProver source info
% 2.67/1.22
% 2.67/1.22 % git: date: 2026-07-19 20:42:38 +0200
% 2.67/1.22 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 2.67/1.22 % git: non_committed_changes: false
% 2.67/1.22
% 2.67/1.22 % ------ Parsing...
% 2.67/1.22 % ------ Clausification by vclausify_rel & Parsing by iProver...%
% 2.67/1.22
% 2.67/1.22 % ------ Preprocessing... sup_sim: 0 sf_s rm: 1 0s sf_e pe_s pe_e %
% 2.67/1.22
% 2.67/1.22 % ------ Preprocessing... gs_s sp: 2 0s gs_e snvd_s sp: 0 0s snvd_e %
% 2.67/1.22
% 2.67/1.22 % ------ Preprocessing... sf_s rm: 1 0s sf_e sf_s rm: 0 0s sf_e
% 2.67/1.22 % ------ Proving...
% 2.67/1.22 % ------ Problem Properties
% 2.67/1.22
% 2.67/1.22 %
% 2.67/1.22 % clauses 15
% 2.67/1.22 % conjectures 6
% 2.67/1.22 % EPR 3
% 2.67/1.22 % Horn 14
% 2.67/1.22 % unary 4
% 2.67/1.22 % binary 5
% 2.67/1.22 % lits 32
% 2.67/1.22 % lits eq 8
% 2.67/1.22 % fd_pure 0
% 2.67/1.22 % fd_pseudo 0
% 2.67/1.22 % fd_cond 0
% 2.67/1.22 % fd_pseudo_cond 0
% 2.67/1.22 % AC symbols 0
% 2.67/1.22
% 2.67/1.22 % ------ Schedule dynamic 5 is on
% 2.67/1.22
% 2.67/1.22 % ------ Input Options "--resolution_flag false --inst_lit_sel_side none" Time Limit: 10.
% 2.67/1.22
% 2.67/1.22
% 2.67/1.22 % ------
% 2.67/1.22 % Current options:
% 2.67/1.22 % ------
% 2.67/1.22
% 2.67/1.22
% 2.67/1.22 %
% 2.67/1.22
% 2.67/1.22 % ------ Proving...
% 2.67/1.22 %
% 2.67/1.22
% 2.67/1.22 % SZS status Theorem for theBenchmark.p
% 2.67/1.22
% 2.67/1.22 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 2.67/1.22
% 2.67/1.22
%------------------------------------------------------------------------------